package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;

import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private CategoryService categoryService;

    /**
     * 保存
     *
     * @param dishDto 菜dto
     * @return {@link R}<{@link String}>
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        //1.基本分页查询
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.like(name != null, Dish::getName, name);
        lqw.orderByAsc(Dish::getUpdateTime);
        dishService.page(pageInfo, lqw);
        //上述查询的分页对象中,list<Dish>数组中,每一个dish对象没有分类名称
        //2.创建分页对象
        Page<DishDto> dtoPage = new Page<>();
        //3.对象拷贝
        BeanUtils.copyProperties(pageInfo, dtoPage, "records");
        //4.获取基本分页查询的集合数据
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> dtolist = new ArrayList<>();
        //5.遍历菜品集合
        records.forEach(dish -> {
            //5.1 将dish拷贝到dishDto
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(dish, dishDto);
            //5.2查询每一个菜品的所属分类名称
            Category category = categoryService.getById(dish.getCategoryId());
            if (category != null) {
                dishDto.setCategoryName(category.getName());
                //5.3放入集合中
                dtolist.add(dishDto);
            } else {
                log.info("菜品{}的分类ID查不到", dish.getName());
            }
        });
        //6.将dtolist集合添加到dtopage分页对象中
        dtoPage.setRecords(dtolist);
        return R.success(dtoPage);
    }

    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

    @DeleteMapping
    public R<String> deleteByIds(@RequestParam List<Long> ids) {
        log.info("ids = {}", ids);
        dishService.removeByIds(ids);
        return R.success("删除成功");
    }

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        //添加条件,查询状态为1(起售状态)的菜品
        queryWrapper.eq(Dish::getStatus, 1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);
        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId, dishId);
            //SQL:select * from dish_flavor where dish_id = ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }
}
